"Mr. Rettberg carried out the tasks assigned to him with self initiative and great care. We were very pleased with the results. He was especially good at working with the varied levels of expertise and requirements of the users that one encounters in a University work environment. He was always available to deal with the small problems that arise during the daily use of computers and at the same time he maintained all the computer-associated equitment in good working order. In addition, he was able to provide expert advice for the purchase and expansion of our computer systems. The programs and systems that were aquired with his advice ran very reliably and productively, which for a group of over 250 users, many with limited experience with computers, was a pleasant surprise. Mr. Rettberg was very engaged in his work and was always willing to help."